.header{
    width: 100%;
    height: 1.707rem;
    background-color: #ffb161;
    border: 0.027rem solid #ffb161;
    font-size: 0.453rem;
    color: #333;
    text-align: center;
    line-height: 1.707rem;
    font-weight: bold;
    position: fixed;
    z-index: 99;
}